From ade8acf834b3861318217e4e11310295199aff09 Mon Sep 17 00:00:00 2001
From: Camil Staps
Date: Tue, 26 Apr 2016 17:23:04 +0200
Subject: Better failing in setbg

---
 bin/setbg-texample | 19 +++++++++++++++----
 1 file changed, 15 insertions(+), 4 deletions(-)

(limited to 'bin')

diff --git a/bin/setbg-texample b/bin/setbg-texample
index 5c06b6d..f2afcab 100755
--- a/bin/setbg-texample
+++ b/bin/setbg-texample
@@ -1,22 +1,32 @@
 #!/bin/bash
 
-# Test internet
-wget -q --spider --timeout=2 https://google.com
-if [ $? -ne 0 ]; then exit -1; fi
-
 SCR_WIDTH=1980
 SCR_HEIGHT=1080
 PADDING=50
 FONT_SIZE=20
 
+function fail() {
+	if [ -f ~/.bg.png ]; then
+		feh --bg-max -B white ~/.bg.png
+	fi
+	exit -1;
+}
+
+# Test internet
+timeout 2 wget -q --spider http://texample.net
+if [ $? -ne 0 ]; then fail; fi
+
 let "SCR_WIDTH -= 2 * $PADDING"
 let "SCR_WIDTH /= 2"
 let "SCR_HEIGHT -= 2 * $PADDING"
 
 PAGE=$RANDOM; let "PAGE %= 22"; let "PAGE += 1"
 
+# Fetch list of texamples
 cd /tmp
 wget -qO texample.html "http://texample.net/tikz/examples/all/?page=$PAGE"
+if [ $? -ne 0 ]; then fail; fi
+
 EXAMPLES="$(grep '^<dl' texample.html | wc -l)"
 awk -v n=0 "BEGIN{n=int(rand()*$EXAMPLES)+1} /^<dl/{l++} (l==n){print} END{}" texample.html | sponge texample.html
 
@@ -30,6 +40,7 @@ wget -qO- "http://texample.net$TEX" | sed -n '/\\begin{document}/,/\\end{documen
 
 montage -geometry "+$PADDING+$PADDING" /tmp/bg-src.png /tmp/bg.png "/tmp/bg-$PAGE.png"
 rm /tmp/bg{,-src}.png
+if [ $? -ne 0]; then fail; fi
 
 feh -B white --bg-max "/tmp/bg-$PAGE.png"
 
-- 
cgit v1.2.3